PythonInterpreter.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
#include "PythonConfig.h"
#include <QObject>
 
#include <memory>
 
#undef slots
#include <pybind11/eval.h>
#include <pybind11/pybind11.h>
 
class QListWidget;
class PythonConfig;
 
class PythonInterpreter final : public QObject
{
    Q_OBJECT
 
  public:
    struct State
    {
        State();
        pybind11::dict globals;
        pybind11::object locals;
    };
 
  public:
    explicit PythonInterpreter(QObject *parent = nullptr);
    bool isExecuting() const;
    void initialize(const PythonConfig &config);
    void finalize();
    static bool IsInitialized();
    const PythonConfigPaths &config() const;
 
  public Q_SLOTS:
    bool executeFile(const std::string &filePath);
    void executeCode(const std::string &code, QListWidget *output);
    void executeCodeWithState(const std::string &code,
                              QListWidget *output,
                              PythonInterpreter::State &state);
    void executeStatementWithState(const std::string &code,
                                   QListWidget *output,
                                   PythonInterpreter::State &state);
    void executeFunction(const pybind11::object &function);
 
  Q_SIGNALS:
    void executionStarted();
    void executionFinished();
 
  private:
    template <pybind11::eval_mode mode>
    void executeCodeString(const std::string &code,
                           QListWidget *output,
                           PythonInterpreter::State &state);
 
  private:
    bool m_isExecuting{false};
 
    PythonConfigPaths m_config;
 
#ifdef Q_OS_UNIX
    void *m_libPythonHandle{nullptr};
#endif
};